I know Duchovny wants to be rid of Mulder. He's made no secret about it. This season is supposed to be his last. Anderson, however, is signed on for another season. That's as far as I've heard about a 7th season. After so many years, it would be difficult to accept Scully without Mulder. It would be like Kirk without Spock. It might carry on, but we'd all know something was missing.
As a joke, my bother and I wrote a goofy premise for the 7th season where Fox has been "abducted" (aliens? Cancer Man?) and his "unmentioned" brother, Moose, comes in from Green Bay with all his college Packer buddies. I don't think Carter'd buy it, but we had this image of a '73 Chevy Nova pulling up alongside Smokey and bunch of green-jacketed gorillas piling out and working him over until they find out what happened to Moose's brother. (Fox went to Oxford and studied psychology, Moose went to Green Bay and studied linebacking.) I know, it's cheesy (no pun intended, Wisconsin), it's stupid, but we had a lot of fun with it.
Hey, looking at your life right now, which X-Files character do you think you're most like? I really admire Cancer Man, but I think I'm more like Krycek. I get knocked to the ground, but always come back up swinging. I'm a survivor who's trying to make the best out of a situation waaaaaaay beyond my control. I'm also doing a lot of looking out for Number One.